Convert Earth equatorial radius to megaparsec Online | Free Length Converter

Earth Equatorial Radius

The Earth's equatorial radius is the distance from the center of the Earth to the equator. It represents the Earth's radius measured along the equatorial plane.

• 
  

  Its value is approximately 6,378.1 kilometers (about 3,963.2 miles).

  
  
• 
  

  The Earth is not a perfect sphere but an oblate spheroid, so the equatorial radius is slightly larger than the polar radius.

  
  
• 
  

  This radius is important for geodesy, satellite orbits, and mapping.

  
  

Key facts:

• 
  

  Equatorial radius ≈ 6,378.1 km

  
  
• 
  

  Larger than polar radius due to Earth's flattening at the poles

  
  
• 
  

  Used in Earth sciences, navigation, and space missions

  
  

Understanding the Earth's equatorial radius helps in accurate modeling of the planet’s shape and gravitational field.

Megaparsec

A megaparsec (Mpc) is a unit of distance used in astronomy to measure vast stretches across the universe. One megaparsec equals one million parsecs, or about 3.26 million light-years (1 Mpc ≈ 3.086 × 10¹⁹ kilometers). This unit is commonly used when discussing the distances between galaxies, galaxy clusters, or large-scale structures of the universe. Because the universe is so massive, astronomers need units like megaparsecs to express distances that are too large for even light-years to handle efficiently. The megaparsec is essential in cosmology and is often used when describing the scale of the observable universe.